Firefox is Getting "NOT RESPONDING" Error.. Rated 2 out of 5 stars

There's some problem with recent update to the last pass. Firefox is getting Not Responding error and i have the same lastpass version on chrome. But there's no issues with chrome. I have the latest version of Firefox but still i'm getting the error.
Can you check the issue and resolve the same asap

Thanks

This review is for a previous version of the add-on (3.1.1.1-signed).